define n endef xif=$(word $($h),$1) $(wordlist 6,200,$1) true=3 false=5 f=$(strip $(if $1,$(call g,$(call f,$(wordlist 2,200,$1)),$h))) g=$(or $(x$2),$2 $1) h=$(word 1,$1) y=$$(info $$(call f, z=)) $(eval $y$(subst $n,$z$y,$(STDIN)))
Note that non-ascii characters in the above source code will be escaped (such as \x9f).